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Vehicle control system

  • US 6,552,649 B1
  • Filed: 06/09/1999
  • Issued: 04/22/2003
  • Est. Priority Date: 06/18/1998
  • Status: Expired due to Term
First Claim
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1. A vehicle control system, comprising:

  • large area ID request means for sending an ID request signal to a portable transceiver present in a specific area around a vehicle to form a large area which is a substantially circular area formed with the vehicle at the center;

    ID verification means for receiving a response ID in reply to the ID request signal to conduct verification with the response ID received;

    area switching means for activating at least one detection means using a detection area smaller than the larger area when the response ID received is verified coincident with a reference ID; and

    control means for controlling operation of a vehicle-mounted device based on a detection result by the detection means.

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